Valve-gear.



.A. E. HALL.

VALVE GEAR.

APPLICATION FILED JAN.27, 1911.

1,078,277. Patented Nov. 11,1913.

2 SHEETS-$113111 l.

r Inventor I by Attorneys A. E. HALL.

VALVE GEAR.

APPLICATION FILED JAN. 27, 1911.

Patented Nov. 11, 1913.

v 2 SHEETSSHEET 2.

jaz/i /m' ggg Witnesses I by 6 E Z Attorneys COLUMBIA PLANOURAPH wADELBERT E. HALL, OF BAYCITY WES.T,- MICHIGAN.

VALV'E- GEAR.

Specification of Letters Patent.

Application filed January 27., 1911.] S 1ialNo. 605,043.

To all whom it may concern:

Be it known that I, ADELBERT E. HALL, a citizen of the United States,residing; at Bay City West, in the county of Bay. and State of:Michigan, have invented a new and useful Valve- Gear, vof which thefollowing is a'specification. I

The present invention relates to improvements in valve gears forengines, and more particularly for that-class of gears used uponlocomotives, the primary object of the present invention being theprovisionof a. novel means for regulating the throw of the valve so thatthe desired speedand power may be imparted to the pistons and drivewheels, the parts-being so located as to not be affected by ,themovable; portion of the boiler due to the inequalitiesuin the road andsurface. conditions.

l/Vith the foregoing and other objects in view which-willappear as-vthedescription proceeds, the invention resides inthe combination andarrangement of parts-and in the details of construction hereinafter dewscribed and claimed, it ."loeing'v understood that changes in theprecise embodiment of the invention herein disclosed-canbe made. withinthe scope of whatis-claiined with-v vention.

In the drawings Figure 1 is a side elevation of the valve gear asappliedto .a 1000-. motive. Fig. 2 isa top plan'view of the same, showing itapplied to both of the valves. Figs. 3 and 4. are. detail views-of theslotted end and mounting of the: link lever-with the adjacent partsofthe gear. Fig. 5. is an enlarged detail vi'ewof the interlocking shaftscarrying the upstanding arms, looking in the direction of the arrow Fig.2.

Referring to'the drawings, the numerall designates the cross head of thepower piston of the locomotive and which is slidably mounted in theusual frame 2' whichhas upstanding from the rear end, the standard orframe 3 which extends from one frame 2 at one side of the locomotive ata point below the boiler to. the. framev 2 atwthe opposite side. Therespective valves ewhich are of usual. construction, are. operatedthrough the rods 5, and'lina manner as will presently appear. j

Connected to the horizontal portion of theframe 3 one. upon. each sidethereof, arethe twobrackets' 6, eachone of which the arc-shaped slot 13thereof.

or ear 14: which is carried by the cross head l'is operably connected tothe lower end of isprovided with the curved rearwardly extendinglug 6C,Connected to the rear face.

and centrally of the horizontal portion of theframe 3 is av journalinglug 8, which has p votally connected thereto, intermediate of its. endsfor. horizontal swinging movement,

the double lever or-walkingbeam 9 which ismanually controlled through arod 10 eX- tendedtothe cab (not shown) of the locomotive. Thus throughthe rod'lO, the. said doublelever '9 maybe oscillated'as desired andmaintained in the selected position.

Disposed for oscillatory movement with: in the journaling end,6 of thebracket 6 is a stud orpin 11 which is carried by the elongated plate.11, said plate 11 being 0on1 nectedto its pin 11"forming the axis for.the. lever link 12 which as. shown in Figs. 3

and .4: is maintainedin its relative swinging position by the arm ,6 andthe connection of the platellto the upper end centrally of the leverlink. 12 throughthe medium of the shortlink 15, sothat the lever link 12is oscillated, with the stud 11 its axis, by the cross headl. outdeparting from the splrit of the lIl- Slidably mounted for movementwithin the arcrshaped'slot 13 so as to. regulate the throw of the.respectivevalves 4, as will later appear, is a.block,16, provided witha stud 17 which is pivotallymountedwithin the apertured enlargement 19of'the rod or link 18, the forward endlS of this rod beingpivotallyconnected to thelower end of-thelink 20, while the. upper. end;of thelink20 .is pivotallyconnected to the forward curved end of thebell-crank lever 7 which is pivotedtat 7 to the extension arm 6 of itsrespective bracket. 6..

The respective ends of the double lever or'walking: beam 9 areconncctedby means of the balland socket joints or other pivotalconnections to. thelower endsof the shortarms .7 ofthebell-crank levers7 By this construction, the movement of thewalk ingbeam or. doublelever9 to the opposite positionto that shown inFig. 2, will cause the curvedend of the, bell-crank lever 7 upon the right hand side of thelocomotive to be elevated so. that the block 16 will be movedzupwardlywithin the arc-shaped' slot 13.to, a point. nearer. the stud l1, andasthe arm 7 of the bell-crank lever 7 upon Patented Nov. 11, 1913.-

The lug the lefthand side of the locomotive is disposed in an oppositeinclined position to the arm 7 a at the right hand side, the bellcranklever 7 controlled thereby will operate the block 16 at the left handside to be elevated within the arc-shaped slot 13 of its respectivelever link 12, thus the manipulation through the rod 10 of the walkingbeam 9 will simultaneously actuate both of the respective bell-cranklevers 7 and thus simultaneously adjust the block 16 within thearc-shaped slot 13 of both of the lever links 12.

Carried upon opposite sides from the frame of the locomotive, to therear of the respective frames 2 thereof, are brackets 21,

in which are mounted for oscillation, the respective reduced pintles'orstub shafts 22 of the valve controlling transversely dis- 24 of the bar23 is adjacent to and upon the same side of the locomotive as the arm n25 of the bar 23'.

valves 4.

The rear end of the two rods 18 are pivotally connected to the twoupstanding arms 24, thus permitting the lever links 12 to oscillate'therods 18 and through the arms 24 simultaneously oscillate the respectivebars 2328, each of which in turn oscillates its respective arm 25, whichhas pivotallyconneeted to its upper end, the rod or link 27 which isextended forwardly and along side of the rod 18. The forward ends of therespective rods or links 27 are pivotally connected by a pin 27intermediate of the ends thereof and within the link 26, said link 26being swingingly mounted upon thejstud 26 carried by the plate 11, allas clearly shown in Figs. 3 and 4. A pin 28 pivotally connects the innerend of the rod 28 to the lower end of the link 26, and as the other endof the link 28' is pivotally connected to the rod 5 of the valve 4, itis evident that the reciprocation of the respective arms 25 will impartthe desired reciprocation to the respective From the foregoingdescription, taken in connection with the drawings the operation of thepresent valve gear is readily understood, but briefly stated it is asfollows:

'Assuming the parts to be in the position as shown in Fig. 1, and it isdesired to limit or shorten thethrow of the valve 4 at the left asviewed in Fig. 2, the rod 10 is moved to push upon the walking beam 9were so that the arm 7 at the right Fig. 2, is moved forwardly toelevate the curved end of the bell-crank lever 7, this action throughthe link 20 lifting the forward end of the rod 18 and consequentlysliding the block 16 upwardly within the arc-shaped slot 13 and thusdecreasing the leverage or movement of the block 16 within the slot 13,so that the reeiprocatory movement imparted to the lever link 12 will beimparted to the rod 18, but such reciprocation or stroke will be shorterthan if the parts were in the position as shown in Fig. 1. This movementof the rod 18 will rock the arm 24 upon the right hand side of thelocomotive and through the bar 23 o crate the arm 25 upon the left handside 0 the locomotive which through the links 27, 26 and 28, at the lefthand side, will throw or move the valve 4 at the left of the locomotiveas desired. At the same time the valve 4 at the right hand side of thelocomotive as viewed in "Figs. 1 and 2 will be similarly actuatedthrough the bell-crank lever 7 and its adj acent parts at the left ofthe locomotive.

What is claimed is:

1. The combination with an engine frame, the pistons, the cross headsand the cylinders, of a valve gear, including a pair of brackets one toeach cylinder, a lever pivoted to each bracket and having its lower endoperably connected to its respective cross head, a belL crank leverpivoted to each bracket, a rod operably connected to the bell-cranklever,

coacting means carried by said rod and one end of the bell-crank leverwhereby the range of movement of the rod may be varied and whereby saidrod is operably connected for operation from the first lever, and avalve operably connected to said rod, the

throw of said valve being controlled by the position of the rodrelatively to the first lever. V

2. The combination with an engine frame, the pistons, the cross headsand the cylinders, of a valve for each cylinder, a bracket carried bythe frame, one to each valve, alever provided with a slotted upper endhaving itslower end operably connected to its respective cross head, twobell-crank levers, one pivoted to each bracket intermediate of its ends,a rod operably connected to one end of each of the bell-crank levers andslidably connected intermediate of its ends to the slotted end of thefirst lever, a pair of bars journaled transversely of the engine frame,an arm carried at one end of each bar and operably connected toitsrespective rod, another arm carried at the opposite end of each ofthe-said bars, and means friroperably connecting the last mentionedarinsto the valve.

3. The combination of an engine frame, the pistons, the cross heads andthe cylinders, of a valve for each cylinder, a bracket carried by theframe, one to each valve, a bell-crank lever mounted in each bracket, alever link having its lower end operably connected to its respectivecross head, the upper end of said lever being pivotally connected to itsrespective bracket for reciprocatory movement, the upper end of saidlever bemg pro vided with an arc-shaped slot therethrough, a blockslidably mounted in said slot, a rod connected to said block and havingone end. operably connected to its respective bellcrank lever, a barjournaled transversely of the frame, said bar being provided with anupstanding arm and one end operably connected to its respective lastmentioned rod, a second arm carried by the bar at its opposite end, andmeans for operably connecting the last arm to the valve.

4:. The combination with an engine frame, the pistons, the cross headsand the cylinders, of a valve for each cylinder, a bracket carried bythe frame, one to each valve, a bellcrank lever mounted in each bracket,a lever link having its lower end operably connected to its respectivecross head, the upper end of said lever being pivotally connected to itsrespective bracket for reciprocatory movement, the upper end of saidlever being pro-V vided with an arc-shaped slot therethrough, a blockslidably mounted in said slot, a rod connected to said block and havingone end operably connected to its respective bellcrank lever, a barjournaled transversely of the frame, said bar being provided with anupstanding arm at one end operably connected to the last mentioned rod,a second arm carried by the bar at its opposite end, a link pivotallyconnected to the lever link near the upper end thereof, a rod connectingthe upper end of the last mentioned arm of the bar with said lastmentioned link, and another rod connecting the link to the valve.

5. A valve gear, including a frame, a reciprocatory cross head, mountedin the frame, a reciprocatory valve, a bracket carried by the frame, alever having a slot in its upper end connected at such slotted end tothe bracket for swinging movement and having its lower end operablyconnected to the cross head, a block slidably mounted in the slotted endof the lever, a rod connected intermediate of its ends to said block, abell-crank lever connected to the bracket and having one end operablyconnected to one end of the rod, manually operated meansv v foractuating the bell-crank lever to slide the block within the slot of theslotted lever, and means for operably connecting said rod to the valveto control the throw of the valve. Y

6. A valve gear, including a frame, a

reciprooatory cross head mounted in the frame, a reciprocatory valve, abracket carried by the frame, a lever havinga slot in its upper endconnected at such slotted end to the bracket' for swinging movement andI having its lower end operably connectedto the cross head, a blockslidably mounted in the slotted end of the lever, a rod connectedintermediate of its ends to said block, a bellcrank lever connected tothe bracket and having one end' operably connected to one end of therod, manually operated means for actuating the bell-crank lever to slidethe block within the slot of the slotted lever, a bar journaledtransversely of the frame, an arm mounted upon each end of said bar, oneofsaid arms being operably connected to the remaining end of the rod, ashort link pivotally connected to the upper end of the slotted lever forindependent movement thereof, and two rods pivotally connected to saidlink and extending in opposite directions, one of said rods beingoperably connected to the remaining arm of the bar, while the other armis operably connected to the valve.

7 A valve gear, including a frame, a reciprocatory cross head mounted inthe frame, a reciprocatory valve, a bracket carried by the frame, alever having a slot in its upper end connected at such slotted end tothe bracket for swinging movement and having its lower end operablyconnected to the cross head, a block slidably mounted in the slotted endof the lever, a rod connected intermediate of its ends to said block, abellcrank lever connected to the bracket and having one end operablyconnected to one end of the rod, manually operated means for actuatingthe bell-crank lever to slide the block within the slot of the slottedlever, a bar journaled transversely of the frame, an arm mounted uponeach end of said bar, one of said arms being operably connected to theremaining end of the rod, a short link p-ivotally connected to the upperend of the slotted lever for independent movement thereof, tw'o rodspivotally connected to said link and extending in opposite directions,one of said rods being operably connected to the remaining arm of thebar while the other rod is operably connected to the valve, 7

Copies of this patent may be obtainedfor five cents each, by addressingthe Commissioner Patents,

Washington, D. G. i

position of the slot of the

